Two Dimensional Axisymmetric Simulation Analysis of Vegetation Combustion Particles Movement in Flame Gap under DC Voltage

Ziheng Pu, Chenqu Zhou, Yuyao Xiong, Tian Wu, Guowei Zhao, Baodong Yang and Peng Li
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Ziheng Pu: College of Electrical Engineering and New Energy, China Three Gorges University, Yichang 443002, China
Chenqu Zhou: College of Electrical Engineering and New Energy, China Three Gorges University, Yichang 443002, China
Yuyao Xiong: College of Electrical Engineering and New Energy, China Three Gorges University, Yichang 443002, China
Tian Wu: College of Electrical Engineering and New Energy, China Three Gorges University, Yichang 443002, China
Guowei Zhao: State Grid Shanxi Province Datong Power Supply Company, Datong 443002, China
Baodong Yang: State Grid Shanxi Province Datong Power Supply Company, Datong 443002, China
Peng Li: College of Electrical Engineering and New Energy, China Three Gorges University, Yichang 443002, China

Energies, 2019, vol. 12, issue 19, 1-13

Abstract: In recent years, extreme high temperature weather occurs frequently, which easily causes forest fires. The forest fire is prone to the trip accident of the transmission line. Previous studies show that charged combustion particles cause electric field distortion in the gap below the transmission line, and trigger discharges near the conductor area. The motion and distribution characteristics of combustion particles in the gap have an important influence on the discharge characteristics. Therefore, the size and morphology of combustion particles are analyzed through combustion experiments with typical vegetation. The combustion particles are mainly affected by the air drag force, electric field force and gravity. The interaction and influence of temperature, fluid, electric field and the multi-physical field of particle motion are comprehensively analyzed. A two dimensional (2D) axisymmetric simulation model is established by simplifying the flame region. According to the heat release rate of vegetation flame combustion, the fluid temperature and velocity are calculated. Combined with the fluid field and electric field, the forces on particles and movement are calculated. The results can provide a basis for the analysis of the electric field distortion, and further study the discharge mechanism of the gap under the condition of vegetation flame.

Keywords: combustion particle; electric field distortion; multi physical field; finite element method; particle movement characteristic (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2019
References: View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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